Question

Sponges belong to the phylum porifera. Give reason.

Answer 1

Answer:

brainliest pls

Explanation:

Sponges belong to phylum Porifera. There are calcium carbonate crystals in the body of the sponge which acts as the endoskeleton. They are known as sponges because they have a perforated body like a sponge. There is a water transport or canal system in which the water enters through ostia in the body wall into the spongocoel and then goes out through the osculum. This pathway is helpful in the circulation of the food, gas exchange and removal of waste

Answer 2

Explanation:

Sponges, the members of the phylum Porifera (/pəˈrɪfərə/; meaning 'pore bearer'), are a basal Metazoa (animal) clade as a sister of the Diploblasts.[3][4][5][6][7] They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through them, consisting of jelly-like mesohyl sandwiched between two thin layers of cells. The branch of zoology that studies sponges is known as spongiology.

Sponges have unspecialized cells that can transform into other types and that often migrate between the main cell layers and the mesohyl in the process. Sponges do not have nervous, digestive or circulatory systems. Instead, most rely on maintaining a constant water flow through their bodies to obtain food and oxygen and to remove wastes. Sponges were first to branch off the evolutionary tree from the last common ancestor of all animals, making them the sister group of all other animals.